Please use correct and latest chromedriver in Appium further release.
There are a lot of issues about chromedriver, like the links as below.
The root cause is from chromedriver itself, but chromedriver fixed it in the latest version 2.13.
Here is the issue link, https://code.google.com/p/chromedriver/issues/detail?id=845.
Appium 1.3.4 still uses the old chromedriver, so please use correct and latest chromedriver in the further release.
Here is the link to get chromedriver 2.13 version.